Knowledge & Memory MCP Servers
Knowledge & Memory category — 531 MCP servers, ranked by GitHub stars.
CogniRepo
FAISS, call graph, AST, BM25 — 34 MCP tools for AI agents. 50-80% token reduction. Offline.
memoir
Persistent memory for AI coding tools via MCP. Remembers across sessions and machines.
deep-thinker
Reasoning via a DAG thought graph with multiple strategies (dialectic, analogical, abductive and more), stuck detection, confidence…
xchucx/agent-memory
Git-native project memory for AI coding agents: Markdown source of truth, reviewable, secret-safe.
NexusMem
Local-first memory for AI coding agents: shell history with exit codes, git diffs, docs, MCP.
Turnbook
Local long-term memory shared by all your AI agents, kept word for word on your own PC.
michael-denyer/memory-mcp
Two-tier memory: hot cache (0ms) + semantic search. Self-organizing.
Obsidian Brain
Obsidian MCP server: semantic search, knowledge graph, and vault editing. No plugin required.
brainbox
Hebbian memory for AI agents. Learns file patterns, predicts next tools, saves tokens.
Midas
Local-first, source-traceable agent memory — no LLM at ingest, fully offline
Longhand
Local memory for Claude Code: 13 MCP tools for semantic recall, file replay, and git history.
lennys-quotes
Search Lenny's Podcast transcripts with YouTube timestamps for product management insights on PRDs, strategy and PM careers.
neurakeep
Local-first, source-cited memory for AI agents with proposal review, failure memory, and MCP tools.
google-knowledge-graph-mcp
Search Google's Knowledge Graph for structured information about real-world entities
Kagura Memory Cloud
Persistent memory for AI assistants: store, search, and connect knowledge across conversations.
mcp-persona-sessions
Structured, persona-driven sessions for interview preparation, personal reflection and coaching, with timers and performance evaluation.
Obsidian Vault MCP Server
Access Obsidian vaults via Local REST API - read, search, and interact with notes
empathy-framework
Five-level AI collaboration system with persistent local-first memory via MemDocs and anticipatory capabilities.
Obsidian Turbocharged
Governed Obsidian vault access: hybrid retrieval, Markdown-native memory, HITL confirmations.
XMemo
Shared, governed long-term memory for AI agents across tools and sessions via MCP and REST.
token-compressor
Compress prompts 40-60% using local LLM + embedding validation. Preserves all conditionals.
claude-find
Pull Deep Memory from across your Claude Code Sessions — when you need it.
Lockstep AI
Shared team memory for Claude Code: decisions, standards, and skills every agent session receives.
n24q02m/mnemo
Persistent AI memory with hybrid search and embedded sync. Open, free, unlimited.
anneal-memory
Two-layer memory for AI agents with an immune system. Zero dependencies.
stifler7/memex
Temporal engineering context for agents via MCP.
Cathedral — Persistent Memory for AI Agents
Persistent memory and drift detection for AI agents across session restarts.
coldstart
Codebase memory for AI agents: an AST index plus agent-written notes that self-stale.
hyunjae-labs/lore
Local semantic search across Claude Code conversations with hybrid vector and keyword search, background indexing and per-project selection.
skillmem
Skill memory for coding agents: learn, recall, reinforce, decay. Local SQLite, no API key.
LIFE
Persistent identity for AI agents: servers for drives, relationships, semantic memory with decay, working threads, learned patterns,…
agentkitai/lore
Cross-agent memory over MCP: hybrid recall, knowledge graph, private/shared visibility, redaction.
memory-arbiter-mcp
Local SQLite MCP memory: evidence-based recall, advisory conflict notices, authorized governance.
KLYPIX Shared Project Memory
Shared project memory for Claude Code, Codex and Cursor: decisions, corrections, overlap warnings.
obsidian-github-mcp
Connect AI assistants to your GitHub-hosted Obsidian vault to seamlessly access, search, and analy…
hivemind
MCP server for Obsidian vaults - AI tools with consistent canonical context. Local-first.
Postgram
Self-hosted memory for AI agents with hybrid search, knowledge graphs, tasks, and document sync.
Turbo Quant Memory
Local-first memory and knowledge graph for coding agents. Compact retrieval, no network.
Hive Vault
On-demand Obsidian vault access for AI coding assistants — 17 tools, 5 resources, 4 prompts.
genome
Fully local memory for AI agents: zero-LLM ingest, semantic recall, air-gapped, auditable.
CodeCortex
Persistent codebase knowledge for coding agents: symbols, dependency graphs, co-change patterns and architectural decisions extracted with…
Tribal
Self-hosted semantic memory over MCP for an engineering team's tacit knowledge. Needs Postgres.
Veracium
Provenance-aware memory for AI agents: quarantine, abstention gate, supersession-with-history.
synapse
Zero-runtime-dependency Markdown memory vault with SQLite search, linked wiki pages, ChatGPT/Claude imports, and human-approved agent note…
legends-mcp
Chat with AI personas of famous founders and investors such as Elon Musk, Warren Buffett and Steve Jobs, based on their voices, frameworks…
sessionmem
Local memory for coding assistants: watches sessions and injects a compact summary at the start of each new one, stored in a SQLite file.
hbarefoot/engram
Local-first persistent memory for AI agents — SQLite + local embeddings, MCP-native, no cloud.
AvianSuite
AI agents run business processes on your business data. Every change is attributed and reversible.
wellread
Shared research cache across agents: reuse answers from verified sources, or save new research for the next developer.
Artel
Self-hosted shared-memory & coordination mesh for AI agent fleets. You host it; agents connect.
mnemostack
Self-hosted hybrid agent memory on Qdrant combining vector search, BM25, temporal retrieval and an optional Memgraph knowledge graph via…
Agent-Memory-OS
Local-first memory engine for AI-agent teams: team/project ACL, recall, and federated sync.
inspeximus: agent memory with provenance, GDPR erasure and a tamper-evident audit trail
Self-correcting agent memory: recall, supersede, revert, forget, GDPR erasure, audit receipts.
dexio
One wiki that all your agents read and write over MCP, from any machine: search, read, write, edit and move Markdown pages, with every…
g1itchbot8888-del/agent-memory
Three-layer agent memory (identity, active, archive) with semantic search, graph relationships and conflict detection.
hypermnesic
Git-first agent memory: Markdown files are the source of truth, the index is disposable and writes are reviewable commits, with hybrid…
memstate-mcp
Versioned, structured agent memory storing facts as keypaths with full version history and automatic conflict detection.
crbro-memory
Persistent file-based memory for AI agents: inspectable, versionable, fully local.
adhd-hub
Self-hosted project-continuity hub for coding agents: tracks unfinished work, progress, overlap and reminders across clients.
AIWiki
Search and read AiWiki, a bilingual English/Chinese encyclopedia of AI-coding pitfalls and LLM privacy protection, with cited evidence.